Why is the ultrasonic welding machine unstable? What should I do if the welding is normal for a while and abnormal for a while?
There are many reasons for the unstable welding of ultrasonic welding machine:
1. Whether the voltage is stable;
2. Whether the air pressure is stable;
3. The frequency deviation of the mold for a long time leads to unstable welding;
4. The machine has been used for a long time and the internal wear and tear;
5. The welding material is not good;
The ultrasonic power is unstable, which mainly depends on the matching of the welding electromechanical box and the transducer and the stability of the electronic components.
If such a problem occurs at the beginning of use, the reasons may be:
1. The design power is not enough;
2. Unreasonable parameter settings;
3. The welding surface of the product and the contact surface of the mold are not flat;
4. There is a problem with the welding machine power supply or transducer or the design is unreasonable;
5. Insufficient welding pressure.
If the above problem occurs several hours after starting normal work, please check:
1. After working for a period of time, the working point drifts and needs to be adjusted;
2. Whether there are changes in welding materials, such as material, thickness, size, etc.;
3. Readjust the welding surface of the product and the contact surface of the mold;
4. The power supply or transducer of the welding machine is damaged;
5. Appropriately increase the welding pressure;
6. Ultrasonic transducer performance attenuation is too large, replace the welding transducer.
There are many factors that cause the instability of ultrasonic welding. Even a professional ultrasonic repairer may not be able to find out the cause of the failure immediately. This requires the operator of the ultrasonic welding machine to observe carefully during use, and combine the reasons analyzed above. Only then can the real problem lie.
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